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-rw-r--r--drivers/md/md.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8cdca0296749..c99634612fc4 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2287,7 +2287,7 @@ static void export_array(struct mddev *mddev)
static bool set_in_sync(struct mddev *mddev)
{
- WARN_ON_ONCE(!spin_is_locked(&mddev->lock));
+ WARN_ON_ONCE(NR_CPUS != 1 && !spin_is_locked(&mddev->lock));
if (!mddev->in_sync) {
mddev->sync_checkers++;
spin_unlock(&mddev->lock);